We simply have to divide the values in all cells in the table with the total count of given row that has that cell that we need to calculate.

\(\begin{array}{|c|c|c|c|c|}
\hline
57.2\%&28.6\%&65.3\%&100\%\\
\hline
42.8\%&71.4\%&34.7\%&100\%\\
\hline
35\%&42\%&23\%&100\%\\
\hline
\end{array}\)